CVE-2022-33738 Weak cryptography in OpenVPN Access Server

High 7.5 Published 6 Jul 2022 Updated 3 Aug 2024

Weak random generation for session tokens in OpenVPN Access Server allows attackers to predict tokens and potentially hijack user sessions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-33738?

CVE-2022-33738 is a high-severity vulnerability in OpenVPN Access Server, published on 6 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal

Weakness: CWE-338, CWE-331

Which versions are affected by CVE-2022-33738?

It affects 1 product.

Products include Openvpn Openvpn Access Server.

How do I fix CVE-2022-33738?

No fix has been published for CVE-2022-33738 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-33738 being exploited?

There is no known exploitation of CVE-2022-33738 in the wild and no public exploit code.

Sources

Also known as GHSA-94wc-gx8c-8825.